Technicals

• Effective range of measurement:
  • Binocular pupillary distance: 45~82 mm
  • Left or right pupillary distance: 22.5-41 mm
• Absolute value of indicated error: ≤ 0.5 mm
• Absolute value of asymmetrical error: ≤ 0.5 mm
• Absolute value of rounding error: ≤ 0.5 mm
• Distance of target: 30 cm~∞
• Power source: Voltage: DC 3.7V
  • Specification: lithium battery
  • Quantitiy: 1 pieces
• Time for automatic shut-off:
  • About 0.5 minute after stopping operation. or turn if off manually.
• Size: 230mm(L) x 167mm(W) x 62mm(H)
• Weight: 0.53kg